Oracle

Enchantment 

Instant and sorcery spells you cast cost 1 less to cast.
Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

6/22/2015
The first ability of Jace’s Sanctum can’t reduce the colored mana requirement of an instant or sorcery spell.

6/22/2015
If there are additional costs to cast an instant or sorcery spell, apply those before applying cost reductions.

6/22/2015
Jace’s Sanctum can reduce alternative costs such as miracle or overload costs.

6/22/2015
Jace’s Sanctum’s scry ability will resolve before the instant or sorcery spell that caused it to trigger.

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